AudioPolicyManager.h revision d1ab2bd4f1ea166a7e9e81cfd7f3e5dd47135d4d
1/* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#pragma once 18 19#include <stdint.h> 20#include <sys/types.h> 21#include <cutils/config_utils.h> 22#include <cutils/misc.h> 23#include <utils/Timers.h> 24#include <utils/Errors.h> 25#include <utils/KeyedVector.h> 26#include <utils/SortedVector.h> 27#include <media/AudioParameter.h> 28#include <media/AudioPolicy.h> 29#include "AudioPolicyInterface.h" 30 31#include <AudioPolicyManagerInterface.h> 32#include <AudioPolicyManagerObserver.h> 33#include <AudioGain.h> 34#include <AudioPort.h> 35#include <AudioPatch.h> 36#include <DeviceDescriptor.h> 37#include <IOProfile.h> 38#include <HwModule.h> 39#include <AudioInputDescriptor.h> 40#include <AudioOutputDescriptor.h> 41#include <AudioPolicyMix.h> 42#include <EffectDescriptor.h> 43#include <SoundTriggerSession.h> 44#include <SessionRoute.h> 45#include <VolumeCurve.h> 46 47namespace android { 48 49// ---------------------------------------------------------------------------- 50 51// Attenuation applied to STRATEGY_SONIFICATION streams when a headset is connected: 6dB 52#define SONIFICATION_HEADSET_VOLUME_FACTOR 0.5 53#define SONIFICATION_HEADSET_VOLUME_FACTOR_DB (-6) 54// Min volume for STRATEGY_SONIFICATION streams when limited by music volume: -36dB 55#define SONIFICATION_HEADSET_VOLUME_MIN 0.016 56#define SONIFICATION_HEADSET_VOLUME_MIN_DB (-36) 57 58// Time in milliseconds during which we consider that music is still active after a music 59// track was stopped - see computeVolume() 60#define SONIFICATION_HEADSET_MUSIC_DELAY 5000 61 62// Time in milliseconds during witch some streams are muted while the audio path 63// is switched 64#define MUTE_TIME_MS 2000 65 66#define NUM_TEST_OUTPUTS 5 67 68#define NUM_VOL_CURVE_KNEES 2 69 70// Default minimum length allowed for offloading a compressed track 71// Can be overridden by the audio.offload.min.duration.secs property 72#define OFFLOAD_DEFAULT_MIN_DURATION_SECS 60 73 74// ---------------------------------------------------------------------------- 75// AudioPolicyManager implements audio policy manager behavior common to all platforms. 76// ---------------------------------------------------------------------------- 77 78class AudioPolicyManager : public AudioPolicyInterface, public AudioPolicyManagerObserver 79 80#ifdef AUDIO_POLICY_TEST 81 , public Thread 82#endif //AUDIO_POLICY_TEST 83{ 84 85public: 86 AudioPolicyManager(AudioPolicyClientInterface *clientInterface); 87 virtual ~AudioPolicyManager(); 88 89 // AudioPolicyInterface 90 virtual status_t setDeviceConnectionState(audio_devices_t device, 91 audio_policy_dev_state_t state, 92 const char *device_address, 93 const char *device_name); 94 virtual audio_policy_dev_state_t getDeviceConnectionState(audio_devices_t device, 95 const char *device_address); 96 virtual void setPhoneState(audio_mode_t state); 97 virtual void setForceUse(audio_policy_force_use_t usage, 98 audio_policy_forced_cfg_t config); 99 virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage); 100 101 virtual void setSystemProperty(const char* property, const char* value); 102 virtual status_t initCheck(); 103 virtual audio_io_handle_t getOutput(audio_stream_type_t stream, 104 uint32_t samplingRate, 105 audio_format_t format, 106 audio_channel_mask_t channelMask, 107 audio_output_flags_t flags, 108 const audio_offload_info_t *offloadInfo); 109 virtual status_t getOutputForAttr(const audio_attributes_t *attr, 110 audio_io_handle_t *output, 111 audio_session_t session, 112 audio_stream_type_t *stream, 113 uid_t uid, 114 uint32_t samplingRate, 115 audio_format_t format, 116 audio_channel_mask_t channelMask, 117 audio_output_flags_t flags, 118 audio_port_handle_t selectedDeviceId, 119 const audio_offload_info_t *offloadInfo); 120 virtual status_t startOutput(audio_io_handle_t output, 121 audio_stream_type_t stream, 122 audio_session_t session); 123 virtual status_t stopOutput(audio_io_handle_t output, 124 audio_stream_type_t stream, 125 audio_session_t session); 126 virtual void releaseOutput(audio_io_handle_t output, 127 audio_stream_type_t stream, 128 audio_session_t session); 129 virtual status_t getInputForAttr(const audio_attributes_t *attr, 130 audio_io_handle_t *input, 131 audio_session_t session, 132 uid_t uid, 133 uint32_t samplingRate, 134 audio_format_t format, 135 audio_channel_mask_t channelMask, 136 audio_input_flags_t flags, 137 audio_port_handle_t selectedDeviceId, 138 input_type_t *inputType); 139 140 // indicates to the audio policy manager that the input starts being used. 141 virtual status_t startInput(audio_io_handle_t input, 142 audio_session_t session); 143 144 // indicates to the audio policy manager that the input stops being used. 145 virtual status_t stopInput(audio_io_handle_t input, 146 audio_session_t session); 147 virtual void releaseInput(audio_io_handle_t input, 148 audio_session_t session); 149 virtual void closeAllInputs(); 150 virtual void initStreamVolume(audio_stream_type_t stream, 151 int indexMin, 152 int indexMax); 153 virtual status_t setStreamVolumeIndex(audio_stream_type_t stream, 154 int index, 155 audio_devices_t device); 156 virtual status_t getStreamVolumeIndex(audio_stream_type_t stream, 157 int *index, 158 audio_devices_t device); 159 160 // return the strategy corresponding to a given stream type 161 virtual uint32_t getStrategyForStream(audio_stream_type_t stream); 162 // return the strategy corresponding to the given audio attributes 163 virtual uint32_t getStrategyForAttr(const audio_attributes_t *attr); 164 165 // return the enabled output devices for the given stream type 166 virtual audio_devices_t getDevicesForStream(audio_stream_type_t stream); 167 168 virtual audio_io_handle_t getOutputForEffect(const effect_descriptor_t *desc = NULL); 169 virtual status_t registerEffect(const effect_descriptor_t *desc, 170 audio_io_handle_t io, 171 uint32_t strategy, 172 int session, 173 int id); 174 virtual status_t unregisterEffect(int id) 175 { 176 return mEffects.unregisterEffect(id); 177 } 178 virtual status_t setEffectEnabled(int id, bool enabled) 179 { 180 return mEffects.setEffectEnabled(id, enabled); 181 } 182 183 virtual bool isStreamActive(audio_stream_type_t stream, uint32_t inPastMs = 0) const; 184 // return whether a stream is playing remotely, override to change the definition of 185 // local/remote playback, used for instance by notification manager to not make 186 // media players lose audio focus when not playing locally 187 // For the base implementation, "remotely" means playing during screen mirroring which 188 // uses an output for playback with a non-empty, non "0" address. 189 virtual bool isStreamActiveRemotely(audio_stream_type_t stream, 190 uint32_t inPastMs = 0) const; 191 192 virtual bool isSourceActive(audio_source_t source) const; 193 194 virtual status_t dump(int fd); 195 196 virtual bool isOffloadSupported(const audio_offload_info_t& offloadInfo); 197 198 virtual status_t listAudioPorts(audio_port_role_t role, 199 audio_port_type_t type, 200 unsigned int *num_ports, 201 struct audio_port *ports, 202 unsigned int *generation); 203 virtual status_t getAudioPort(struct audio_port *port); 204 virtual status_t createAudioPatch(const struct audio_patch *patch, 205 audio_patch_handle_t *handle, 206 uid_t uid); 207 virtual status_t releaseAudioPatch(audio_patch_handle_t handle, 208 uid_t uid); 209 virtual status_t listAudioPatches(unsigned int *num_patches, 210 struct audio_patch *patches, 211 unsigned int *generation); 212 virtual status_t setAudioPortConfig(const struct audio_port_config *config); 213 214 virtual void releaseResourcesForUid(uid_t uid); 215 216 virtual status_t acquireSoundTriggerSession(audio_session_t *session, 217 audio_io_handle_t *ioHandle, 218 audio_devices_t *device); 219 220 virtual status_t releaseSoundTriggerSession(audio_session_t session) 221 { 222 return mSoundTriggerSessions.releaseSession(session); 223 } 224 225 virtual status_t registerPolicyMixes(Vector<AudioMix> mixes); 226 virtual status_t unregisterPolicyMixes(Vector<AudioMix> mixes); 227 228 virtual status_t startAudioSource(const struct audio_port_config *source, 229 const audio_attributes_t *attributes, 230 audio_io_handle_t *handle, 231 uid_t uid); 232 virtual status_t stopAudioSource(audio_io_handle_t handle); 233 234 virtual status_t setMasterMono(bool mono); 235 virtual status_t getMasterMono(bool *mono); 236 237 // Audio policy configuration file parsing (audio_policy.conf) 238 // TODO candidates to be moved to ConfigParsingUtils 239 void defaultAudioPolicyConfig(void); 240 241 // return the strategy corresponding to a given stream type 242 routing_strategy getStrategy(audio_stream_type_t stream) const; 243 244protected: 245 // From AudioPolicyManagerObserver 246 virtual const AudioPatchCollection &getAudioPatches() const 247 { 248 return mAudioPatches; 249 } 250 virtual const SoundTriggerSessionCollection &getSoundTriggerSessionCollection() const 251 { 252 return mSoundTriggerSessions; 253 } 254 virtual const AudioPolicyMixCollection &getAudioPolicyMixCollection() const 255 { 256 return mPolicyMixes; 257 } 258 virtual const SwAudioOutputCollection &getOutputs() const 259 { 260 return mOutputs; 261 } 262 virtual const AudioInputCollection &getInputs() const 263 { 264 return mInputs; 265 } 266 virtual const DeviceVector &getAvailableOutputDevices() const 267 { 268 return mAvailableOutputDevices; 269 } 270 virtual const DeviceVector &getAvailableInputDevices() const 271 { 272 return mAvailableInputDevices; 273 } 274 virtual IVolumeCurvesCollection &getVolumeCurves() { return *mVolumeCurves; } 275 virtual const sp<DeviceDescriptor> &getDefaultOutputDevice() const 276 { 277 return mDefaultOutputDevice; 278 } 279protected: 280 void addOutput(audio_io_handle_t output, sp<SwAudioOutputDescriptor> outputDesc); 281 void removeOutput(audio_io_handle_t output); 282 void addInput(audio_io_handle_t input, sp<AudioInputDescriptor> inputDesc); 283 284 // return appropriate device for streams handled by the specified strategy according to current 285 // phone state, connected devices... 286 // if fromCache is true, the device is returned from mDeviceForStrategy[], 287 // otherwise it is determine by current state 288 // (device connected,phone state, force use, a2dp output...) 289 // This allows to: 290 // 1 speed up process when the state is stable (when starting or stopping an output) 291 // 2 access to either current device selection (fromCache == true) or 292 // "future" device selection (fromCache == false) when called from a context 293 // where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND 294 // before updateDevicesAndOutputs() is called. 295 virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy, 296 bool fromCache); 297 298 bool isStrategyActive(const sp<AudioOutputDescriptor> outputDesc, routing_strategy strategy, 299 uint32_t inPastMs = 0, nsecs_t sysTime = 0) const; 300 301 // change the route of the specified output. Returns the number of ms we have slept to 302 // allow new routing to take effect in certain cases. 303 virtual uint32_t setOutputDevice(const sp<AudioOutputDescriptor>& outputDesc, 304 audio_devices_t device, 305 bool force = false, 306 int delayMs = 0, 307 audio_patch_handle_t *patchHandle = NULL, 308 const char* address = NULL); 309 status_t resetOutputDevice(const sp<AudioOutputDescriptor>& outputDesc, 310 int delayMs = 0, 311 audio_patch_handle_t *patchHandle = NULL); 312 status_t setInputDevice(audio_io_handle_t input, 313 audio_devices_t device, 314 bool force = false, 315 audio_patch_handle_t *patchHandle = NULL); 316 status_t resetInputDevice(audio_io_handle_t input, 317 audio_patch_handle_t *patchHandle = NULL); 318 319 // select input device corresponding to requested audio source 320 virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource); 321 322 // compute the actual volume for a given stream according to the requested index and a particular 323 // device 324 virtual float computeVolume(audio_stream_type_t stream, 325 int index, 326 audio_devices_t device); 327 328 // check that volume change is permitted, compute and send new volume to audio hardware 329 virtual status_t checkAndSetVolume(audio_stream_type_t stream, int index, 330 const sp<AudioOutputDescriptor>& outputDesc, 331 audio_devices_t device, 332 int delayMs = 0, bool force = false); 333 334 // apply all stream volumes to the specified output and device 335 void applyStreamVolumes(const sp<AudioOutputDescriptor>& outputDesc, 336 audio_devices_t device, int delayMs = 0, bool force = false); 337 338 // Mute or unmute all streams handled by the specified strategy on the specified output 339 void setStrategyMute(routing_strategy strategy, 340 bool on, 341 const sp<AudioOutputDescriptor>& outputDesc, 342 int delayMs = 0, 343 audio_devices_t device = (audio_devices_t)0); 344 345 // Mute or unmute the stream on the specified output 346 void setStreamMute(audio_stream_type_t stream, 347 bool on, 348 const sp<AudioOutputDescriptor>& outputDesc, 349 int delayMs = 0, 350 audio_devices_t device = (audio_devices_t)0); 351 352 // handle special cases for sonification strategy while in call: mute streams or replace by 353 // a special tone in the device used for communication 354 void handleIncallSonification(audio_stream_type_t stream, bool starting, bool stateChange); 355 356 audio_mode_t getPhoneState(); 357 358 // true if device is in a telephony or VoIP call 359 virtual bool isInCall(); 360 // true if given state represents a device in a telephony or VoIP call 361 virtual bool isStateInCall(int state); 362 363 // when a device is connected, checks if an open output can be routed 364 // to this device. If none is open, tries to open one of the available outputs. 365 // Returns an output suitable to this device or 0. 366 // when a device is disconnected, checks if an output is not used any more and 367 // returns its handle if any. 368 // transfers the audio tracks and effects from one output thread to another accordingly. 369 status_t checkOutputsForDevice(const sp<DeviceDescriptor> devDesc, 370 audio_policy_dev_state_t state, 371 SortedVector<audio_io_handle_t>& outputs, 372 const String8 address); 373 374 status_t checkInputsForDevice(const sp<DeviceDescriptor> devDesc, 375 audio_policy_dev_state_t state, 376 SortedVector<audio_io_handle_t>& inputs, 377 const String8 address); 378 379 // close an output and its companion duplicating output. 380 void closeOutput(audio_io_handle_t output); 381 382 // close an input. 383 void closeInput(audio_io_handle_t input); 384 385 // checks and if necessary changes outputs used for all strategies. 386 // must be called every time a condition that affects the output choice for a given strategy 387 // changes: connected device, phone state, force use... 388 // Must be called before updateDevicesAndOutputs() 389 void checkOutputForStrategy(routing_strategy strategy); 390 391 // Same as checkOutputForStrategy() but for a all strategies in order of priority 392 void checkOutputForAllStrategies(); 393 394 // manages A2DP output suspend/restore according to phone state and BT SCO usage 395 void checkA2dpSuspend(); 396 397 // selects the most appropriate device on output for current state 398 // must be called every time a condition that affects the device choice for a given output is 399 // changed: connected device, phone state, force use, output start, output stop.. 400 // see getDeviceForStrategy() for the use of fromCache parameter 401 audio_devices_t getNewOutputDevice(const sp<AudioOutputDescriptor>& outputDesc, 402 bool fromCache); 403 404 // updates cache of device used by all strategies (mDeviceForStrategy[]) 405 // must be called every time a condition that affects the device choice for a given strategy is 406 // changed: connected device, phone state, force use... 407 // cached values are used by getDeviceForStrategy() if parameter fromCache is true. 408 // Must be called after checkOutputForAllStrategies() 409 void updateDevicesAndOutputs(); 410 411 // selects the most appropriate device on input for current state 412 audio_devices_t getNewInputDevice(audio_io_handle_t input); 413 414 virtual uint32_t getMaxEffectsCpuLoad() 415 { 416 return mEffects.getMaxEffectsCpuLoad(); 417 } 418 419 virtual uint32_t getMaxEffectsMemory() 420 { 421 return mEffects.getMaxEffectsMemory(); 422 } 423#ifdef AUDIO_POLICY_TEST 424 virtual bool threadLoop(); 425 void exit(); 426 int testOutputIndex(audio_io_handle_t output); 427#endif //AUDIO_POLICY_TEST 428 429 SortedVector<audio_io_handle_t> getOutputsForDevice(audio_devices_t device, 430 SwAudioOutputCollection openOutputs); 431 bool vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 432 SortedVector<audio_io_handle_t>& outputs2); 433 434 // mute/unmute strategies using an incompatible device combination 435 // if muting, wait for the audio in pcm buffer to be drained before proceeding 436 // if unmuting, unmute only after the specified delay 437 // Returns the number of ms waited 438 virtual uint32_t checkDeviceMuteStrategies(sp<AudioOutputDescriptor> outputDesc, 439 audio_devices_t prevDevice, 440 uint32_t delayMs); 441 442 audio_io_handle_t selectOutput(const SortedVector<audio_io_handle_t>& outputs, 443 audio_output_flags_t flags, 444 audio_format_t format); 445 // samplingRate, format, channelMask are in/out and so may be modified 446 sp<IOProfile> getInputProfile(audio_devices_t device, 447 String8 address, 448 uint32_t& samplingRate, 449 audio_format_t& format, 450 audio_channel_mask_t& channelMask, 451 audio_input_flags_t flags); 452 sp<IOProfile> getProfileForDirectOutput(audio_devices_t device, 453 uint32_t samplingRate, 454 audio_format_t format, 455 audio_channel_mask_t channelMask, 456 audio_output_flags_t flags); 457 458 audio_io_handle_t selectOutputForEffects(const SortedVector<audio_io_handle_t>& outputs); 459 460 virtual status_t addAudioPatch(audio_patch_handle_t handle, const sp<AudioPatch>& patch) 461 { 462 return mAudioPatches.addAudioPatch(handle, patch); 463 } 464 virtual status_t removeAudioPatch(audio_patch_handle_t handle) 465 { 466 return mAudioPatches.removeAudioPatch(handle); 467 } 468 469 audio_devices_t availablePrimaryOutputDevices() const 470 { 471 if (!hasPrimaryOutput()) { 472 return AUDIO_DEVICE_NONE; 473 } 474 return mPrimaryOutput->supportedDevices() & mAvailableOutputDevices.types(); 475 } 476 audio_devices_t availablePrimaryInputDevices() const 477 { 478 if (!hasPrimaryOutput()) { 479 return AUDIO_DEVICE_NONE; 480 } 481 return mAvailableInputDevices.getDevicesFromHwModule(mPrimaryOutput->getModuleHandle()); 482 } 483 484 void updateCallRouting(audio_devices_t rxDevice, int delayMs = 0); 485 486 // if argument "device" is different from AUDIO_DEVICE_NONE, startSource() will force 487 // the re-evaluation of the output device. 488 status_t startSource(sp<AudioOutputDescriptor> outputDesc, 489 audio_stream_type_t stream, 490 audio_devices_t device, 491 uint32_t *delayMs); 492 status_t stopSource(sp<AudioOutputDescriptor> outputDesc, 493 audio_stream_type_t stream, 494 bool forceDeviceUpdate); 495 496 void clearAudioPatches(uid_t uid); 497 void clearSessionRoutes(uid_t uid); 498 void checkStrategyRoute(routing_strategy strategy, audio_io_handle_t ouptutToSkip); 499 500 status_t hasPrimaryOutput() const { return mPrimaryOutput != 0; } 501 502 status_t connectAudioSource(const sp<AudioSourceDescriptor>& sourceDesc); 503 status_t disconnectAudioSource(const sp<AudioSourceDescriptor>& sourceDesc); 504 505 sp<AudioSourceDescriptor> getSourceForStrategyOnOutput(audio_io_handle_t output, 506 routing_strategy strategy); 507 508 void cleanUpForDevice(const sp<DeviceDescriptor>& deviceDesc); 509 510 void clearAudioSources(uid_t uid); 511 512 513 uid_t mUidCached; 514 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface 515 sp<SwAudioOutputDescriptor> mPrimaryOutput; // primary output descriptor 516 // list of descriptors for outputs currently opened 517 518 SwAudioOutputCollection mOutputs; 519 // copy of mOutputs before setDeviceConnectionState() opens new outputs 520 // reset to mOutputs when updateDevicesAndOutputs() is called. 521 SwAudioOutputCollection mPreviousOutputs; 522 AudioInputCollection mInputs; // list of input descriptors 523 524 DeviceVector mAvailableOutputDevices; // all available output devices 525 DeviceVector mAvailableInputDevices; // all available input devices 526 527 SessionRouteMap mOutputRoutes = SessionRouteMap(SessionRouteMap::MAPTYPE_OUTPUT); 528 SessionRouteMap mInputRoutes = SessionRouteMap(SessionRouteMap::MAPTYPE_INPUT); 529 530 IVolumeCurvesCollection *mVolumeCurves; // Volume Curves per use case and device category 531 532 bool mLimitRingtoneVolume; // limit ringtone volume to music volume if headset connected 533 audio_devices_t mDeviceForStrategy[NUM_STRATEGIES]; 534 float mLastVoiceVolume; // last voice volume value sent to audio HAL 535 536 EffectDescriptorCollection mEffects; // list of registered audio effects 537 bool mA2dpSuspended; // true if A2DP output is suspended 538 sp<DeviceDescriptor> mDefaultOutputDevice; // output device selected by default at boot time 539 HwModuleCollection mHwModules; 540 541 volatile int32_t mAudioPortGeneration; 542 543 AudioPatchCollection mAudioPatches; 544 545 SoundTriggerSessionCollection mSoundTriggerSessions; 546 547 sp<AudioPatch> mCallTxPatch; 548 sp<AudioPatch> mCallRxPatch; 549 550 HwAudioOutputCollection mHwOutputs; 551 AudioSourceCollection mAudioSources; 552 553 // for supporting "beacon" streams, i.e. streams that only play on speaker, and never 554 // when something other than STREAM_TTS (a.k.a. "Transmitted Through Speaker") is playing 555 enum { 556 STARTING_OUTPUT, 557 STARTING_BEACON, 558 STOPPING_OUTPUT, 559 STOPPING_BEACON 560 }; 561 uint32_t mBeaconMuteRefCount; // ref count for stream that would mute beacon 562 uint32_t mBeaconPlayingRefCount;// ref count for the playing beacon streams 563 bool mBeaconMuted; // has STREAM_TTS been muted 564 bool mTtsOutputAvailable; // true if a dedicated output for TTS stream is available 565 566 bool mMasterMono; // true if we wish to force all outputs to mono 567 AudioPolicyMixCollection mPolicyMixes; // list of registered mixes 568 569#ifdef AUDIO_POLICY_TEST 570 Mutex mLock; 571 Condition mWaitWorkCV; 572 573 int mCurOutput; 574 bool mDirectOutput; 575 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS]; 576 int mTestInput; 577 uint32_t mTestDevice; 578 uint32_t mTestSamplingRate; 579 uint32_t mTestFormat; 580 uint32_t mTestChannels; 581 uint32_t mTestLatencyMs; 582#endif //AUDIO_POLICY_TEST 583 584 uint32_t nextAudioPortGeneration(); 585 586 // Audio Policy Engine Interface. 587 AudioPolicyManagerInterface *mEngine; 588private: 589 // If any, resolve any "dynamic" fields of an Audio Profiles collection 590 void updateAudioProfiles(audio_io_handle_t ioHandle, AudioProfileVector &profiles); 591 592 // updates device caching and output for streams that can influence the 593 // routing of notifications 594 void handleNotificationRoutingForStream(audio_stream_type_t stream); 595 // find the outputs on a given output descriptor that have the given address. 596 // to be called on an AudioOutputDescriptor whose supported devices (as defined 597 // in mProfile->mSupportedDevices) matches the device whose address is to be matched. 598 // see deviceDistinguishesOnAddress(audio_devices_t) for whether the device type is one 599 // where addresses are used to distinguish between one connected device and another. 600 void findIoHandlesByAddress(sp<SwAudioOutputDescriptor> desc /*in*/, 601 const audio_devices_t device /*in*/, 602 const String8 address /*in*/, 603 SortedVector<audio_io_handle_t>& outputs /*out*/); 604 uint32_t curAudioPortGeneration() const { return mAudioPortGeneration; } 605 // internal method to return the output handle for the given device and format 606 audio_io_handle_t getOutputForDevice( 607 audio_devices_t device, 608 audio_session_t session, 609 audio_stream_type_t stream, 610 uint32_t samplingRate, 611 audio_format_t format, 612 audio_channel_mask_t channelMask, 613 audio_output_flags_t flags, 614 const audio_offload_info_t *offloadInfo); 615 // internal method to return the input handle for the given device and format 616 audio_io_handle_t getInputForDevice(audio_devices_t device, 617 String8 address, 618 audio_session_t session, 619 uid_t uid, 620 audio_source_t inputSource, 621 uint32_t samplingRate, 622 audio_format_t format, 623 audio_channel_mask_t channelMask, 624 audio_input_flags_t flags, 625 AudioMix *policyMix); 626 627 // internal function to derive a stream type value from audio attributes 628 audio_stream_type_t streamTypefromAttributesInt(const audio_attributes_t *attr); 629 // event is one of STARTING_OUTPUT, STARTING_BEACON, STOPPING_OUTPUT, STOPPING_BEACON 630 // returns 0 if no mute/unmute event happened, the largest latency of the device where 631 // the mute/unmute happened 632 uint32_t handleEventForBeacon(int event); 633 uint32_t setBeaconMute(bool mute); 634 bool isValidAttributes(const audio_attributes_t *paa); 635 636 // select input device corresponding to requested audio source and return associated policy 637 // mix if any. Calls getDeviceForInputSource(). 638 audio_devices_t getDeviceAndMixForInputSource(audio_source_t inputSource, 639 AudioMix **policyMix = NULL); 640 641 // Called by setDeviceConnectionState(). 642 status_t setDeviceConnectionStateInt(audio_devices_t device, 643 audio_policy_dev_state_t state, 644 const char *device_address, 645 const char *device_name); 646 void updateMono(audio_io_handle_t output) { 647 AudioParameter param; 648 param.addInt(String8(AUDIO_PARAMETER_MONO_OUTPUT), (int)mMasterMono); 649 mpClientInterface->setParameters(output, param.toString()); 650 } 651}; 652 653}; 654